Abstract
Collins and Morton1 have recently compared Houston's equation2 with Macsoll's3 where ϵmax. is the molecular extinction coefficient at the maximum of an absorption band the wave-length of which is λm (= 1/vm);λ' (= 1/v) is the wavelength at which the absorption is semi-maximal, A and B are universal constants, n is the refractive index of the solvent at λm, and p is the classical oscillator strength ; f is given approximately by the expression where C is another universal constant, and a is the area included between the absorption curve and the wave-length scale.
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References
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WEALE, R. Absorption Spectra, Molecular Weights and Visual Purple. Nature 164, 959–960 (1949). https://doi.org/10.1038/164959b0
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DOI: https://doi.org/10.1038/164959b0
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